“Lyrical” is surrounded by commas, implying that it is a supplementary clause. Here, Peacock emphasizes the fluidity of “Little Miracle.” The commas enclosing “lyrical” act in the same manner as parentheses would; that is, to add supplementary information that does not affect the grammar of the sentence. “And lyrical,” as such, seems to be more of a spontaneous afterthought than a purposefully manufactured phrase. If we view the phrase in this manner, we are more likely to lower the octave of our voice when we pronounce it: the supplementary clause is lower than the independent clause both in importance and pronunciation. This up-and-down movement of the octaves when reading this phrase aurally reproduces the fluidity that the words “whimsical” and “lyrical” both suggest. To play off the anxiety and reassurance binary, the supplementary clause works to reassure and reinforce the independent clause: much like its name would suggest, it supplements, or enhances, the previous phrase.
The phrase “large and slow and clear,” conversely, uses polysyndeton, or the use of conjunctions in a list instead of commas. Polysyndeton, apart from equally emphasizing each item in a list, creates a monotonous rhythm that breaks the list into its elementary parts. If we are to read this list aloud, there is no suggestion in the line that the octave of our voice should change with each item. If we choose to put more emphasize on one item, it is because we personally believe the item has more significance, not because the poem suggests it does. In this sense, the phrase “large and slow and clear” is rigid: its simple, polysyndetonal wording forces us to adhere to a monotonous rhythm. When we return to the other binary I have proposed between anxiety and acceptance, the phrase “large and slow and clear” creates an interesting ambiguity. While the words themselves seem calm and reassuring, the polysyndeton creates a building feeling of anxiety due to its repetition. However, this interpretation relies heavily on our own personal attitudes: some may find the monotonous repetition of acts or phrases reassuring and calming, while some, like myself, may find them anxiety-and-headache inducing.